Flayel simonson



(No Model.)

F. SIMONSON. LOG LIPTEB. AND TURNER.

Patented Mar. 1'7, 1891.

@WMM/@awo l with STATES ATEN muon,

FLAV EL SIMONSON, OF MILIVAUKEE, IVISCONSIN, ASSIGNOR TO GEORGE H.

` OHAMBERLAIN, OF SAME PLACE.

LOG LIFTER AND TURNER.

SPECIFICATION forming part or" Letters Patent No. 448,593, dated March17, 1891. Application filed May 26, 1890. Renewed February 24, 1891.Serial No. 382,323. (No model.)

.To ttZZ whom it may concern:

Beit known that I, FLnvnL SIMoNsoN, a citizen of the United States ofAmerica, residing at Milwaukee, in the county of Milwau- 5 kee and Stateof IVisconsin, have invented a certain new and Improved Log Lifter andTurner, of which the following is a specification, reference being hadtherein to the accompanying drawin v 1o My invention relates to certainnew and useful improvements in log lifting and turning machines ot theclass in which a log is litted from the logway, pushed onto thecarriage, and turned by mechanism controlled by a single lever, such amachine being shown and described in an application for Letters Patentof the United States iiled by me on the 13th day of February, 1890, andnumbered 340,338. zo One object of my present invention is to providefor the operation of the hook-carrying arms independent of the operationof the push-arms, whereby a round log may be turned after it has beenpushed onto the carriage and the hook may be withdrawn out of the Way ofthe carriage the instant the log is pushed back into position, therebyvery materially increasing the operative speed ot the machine. v

Another Object of my invention is the production of a hook that willdisengage itself from the log when the latter is turned.

My invention consists, first, in mounting the hook-arms loosely upon therock-shaft and in engagement with recessed collars rigidly secured onsaid shaft; secondly, in a novel construction of the hook, which isprovided with a horn, the purpose of which is to contact with the logwhen the latter has been 4o turned and cause the disengagement of thehook, and, thirdly, in providing each steamcylinder with a steanrchestand connecting` each valve-stein with a quadrant upon the rock-shaft,whereby the respective valves may be centered independently of eachother.

Figure l of the drawings is a perspective view of a machine embodying myimprove ments. Fig. 2 isafront elevation ot' the hool-tarms and theirhub. Fig. 3 is a perspective view of one of the recessed collars. a sideelevation of the hook.

Fig. fl is In the drawings, A is the mill-floor, upon which the machineis set; B, the logways, only one of which is shown; C, the rock-shaft,mounted in pillow-blocks c; and D the carriage head-blocks, only onebeing shown.

E E are the push-arms, keyed or otherwise rigidly secured on therock-shaft C. On one of these arms there is formed a quadrant e, for apurpose which will be explained farther 6o on. As will be seen, thequadrant is slotted annularly, as at l, and also peripherally, as at 2.Inside of the annular slot is placed a metal block 3, as seen in Fig. 2,which is adjustably secured therein by means ot bolt et, passed througha washer 5 and provided with nut G. This quadrantis shown and describedin my former application, above alluded to, as a separate castingsecured on the rock-shaft.

F F are the hookarms. Instead of forming 7o these arms separate andrigidly securing them upon the rockshatt C, as I have done heretofore, Inow cast them integral with a hub f, having a projecting lug 7 on eachend, andintegral with the hub there is also cast a quadrant e, in allrespects similar to t-he one on one of the push-arms above described. Imount this hub loosely ou the rock-shaft C between two collars G, keyedon the shaft, with the lugs on the hub lying within recesses S, cut inthe 8o inner end of the collars. As will be seen in the drawings, theserecesses 8 in the collars are ot' considerably greater width than thelugs 7 on the hub, and the collars are so adjusted on the shaft thatwhen the hook-arms 8 5 are down in the position of rest the upper wallsof the recesses will bear upon the upper edges of the lugs.

In the upper ends of the hook-arms F is pivoted the hook II, which whendown rests 9o on ablock 71., secured between the arms. The butt ot thehook is bifurcated, and each branch is separately pivoted to itsrespective arm F. On each branch of the hook-butt there is formed anoutwardly-projecting lug 9, which lugs ride freely over the upperrounded ends of arms F when the hook is canted forward to engage witht-he log', but contact with the backs of said arms When it is thrown upinto the reaching position, there roo by preventing the hook from beingtilted over backward by any sudden jar. For the purpose of causing thehook to discngage itself from the log when the latter has been turned tothe desired position, I provide it with a horn 72,', iu front of andpreferably in line with the hooked portion in. As will be seen in thedrawings, the horn is somewhat shorter than the hooked portion and has ablunt end, which, on coming in contact with the log, will cause thehooked portion to be lifted out of engagement with the latter.

I represents the lifting-bars, pivoted at their rear ends to stands I',the forward ends of the bars resting on cams .I,kcyed on the rockshaftC.

K K are two oscillating steam-cylinders connected, respectively, withtwo steamchests L L bysuitable pipes 10 1l and l2 13, as seen in fulland dotted lines. The pistonrod M of cylinder K is pivoted to one of thepush-arms E, and the piston-rod M of cylinder K is pivoted to the hookIl at Il, eccentric to the pivotal points of the hook to its arms.

N N are the valve-stems of the engines, each of which is made in twopieces, these being connected by a right-and-left screwthreaded sleeven, as seen in the drawings, and each stem is provided with a T -head 15,which lies horizontal in the annular slot in one of the quadrants e, thestem N connecting with the quadrant on the push-arm and the stem Nconnecting with the quadrant on the hub of the hook-arms.

O is a shaft located underneath the millfloor, to one end of which ispivoted the operating-lever I), which extends upward through the floor,and on the other end of this shaft there is rigidly secured a crank O',to which is pivoted one end of a rod Q, which passes up through thefloor, and is pivoted at its other end to an arm R', secured on thevalvestem N.

On the valve-stein X is secured another arm It, similar to the one onstem h", and to this arm is pivoted one end of a rod S, whose other endis pivoted to one arm of a bellcrank T, underneath the floor. Anotherrod U is pivotally connected to the other arm of this bell-crank and tothe operating-lever I.

The operation of my machine is as follows: The first thing to be done isto provide for cutting off the steam. To do this I rst turn therock-shaft C so that the quadrants c will be down and the IT-heads ofthe valve-stems at the forward ends of the slots l after which I centerthe valves by lengthening or shortening the valve-stems by means of thesleeves n. I next turn the push-arms and the hookarms up as far as it isdesired to have them go, each set separately, and then adjust thequadrant-blocks 3 against the 'lV-heads of the valve-stems. Now assumethat the rock-shaft C is turned so as to bring the cams, the pusharms,and the hook-arms into a horizontal position, with the hook down betweenits arms, and that a log rests upon the logways B and over thelifting-bars I, when, as will be evident from the foregoing description,all the valve-Lmrts will be closed. The operator (who for convenience ofdescription is p'esumed to be facing the log) now pushes lever P to theright, which movement, in an obvious manner, opens one of thevalve-ports in the steamchest L and admits steam through the pipe ll tothe rear end of cylinder K, forcing` its piston and piston rod forwardand rocking shaft C forward, when the cams will raise the lifting-barsand thus lift thc log clear of the logways, by which time the push-armswill bear against the log and push it onto the headblocks of thecarriage, the arms continuing to swing forward for that purpose untilthe quadrant reaches a position to cause the valvestem to center thevalve and throw lever I) back to its normal position. \Vl1ile thismovement of the push-arms to place the log upon the head-blocks is goingon, however, the operator pushes lever I forward, which works shaft Oforward, and thus opens one of the ports in steam-chest L and admitssteam through pipe 12 to the rear end of cylinder K', forcing its pistonand piston-rod forward, thereby raising the hook-arms and throwing thehook up into a position to engage with the log at any desired point inits circumference, when he immediately reverses the lever to open theother port in steam-chest L and admit steam through pipe 13 to the frontend of cylinder K, which results in drawing the hook down onto the log,and then, as the hook is at the same time being drawn backward, the log,resting against the lifting-bars and push-arms, will be turned to thedesired position, by which time, the hook no longerhaving a hold uponthe log, the hook-arms and hook will fall back to their normalpositions. The operator now pushes lever P to the left, and therebyadmits steam through pipe lO to the forward end of cylinder K and rocksshaft C and its attached push-arms and cams back to their normalpositions of rest.

Thus far the description applies to around log; but we will now assumethat a slab has been cut and it is desired to turn the log for anothercut. The operator in this case first admits steam to cylinder K behindthe piston, which drives its piston-rod forward and raises the hook andhook-arms, and as the lugs on the hook-arms engage with the collars onthe rock-shaft the latter is turned, thereby raising the push-arms, thecams, and the lifting-bars. IIe then reverses the action of the pistonin cylinder K', which draws the hook down onto the log and rearward,thus turning the log, the hook-arms meanwhile turning backward looselyon the rock-shaft, and then when the log has been turned the hook willleave it and the hook-arms and hook will drop to the position of rest.Next he admits steam to the rear end of cylinder K, rocking shaft Cforward, raising the log` and pushing it back into place upon thehead-blocks, and finally he rocks shaft C back into position of rest.

Having thus described my invention, what IOO IOS

IIO

- I claim as new, and desire to secure by Lotters Patent, is-

l. In a log lifting,` and turning machine of the class described, thecombination, with the rock-shaft bearingrigidly-attached cams andpush-arms, mechanism for rocking theshaft, and pivoted liftingbarsoperated by said cams, of a hook-carrier loosely mounted on therock-shaft, stops for limiting` the movements of the hook-carrier, andmechanism for turning said carrier upon the shaft and operating thehook, substantially as described.

2. In a log lifting and turning machine of the class described, thecombination, with the rocleshaft bearing rigidly-attached cams andpush-arms, mechanism for rocking the shaft, and pivoted lifting-barsoperated by said cams, of two recessed collars rigidly fixed on therock-shaft, two hook-arms joined at their lower ends to a hub looselymounted on said shaft between the collars, the hub having lugs restingin the recessed portions of the collars, a `hook pivoted between theupper ends of the hook-arms, and mechanism for turning the hook-armsupon the shaft and operating` the hook, substantiallyas described.

3. In a 10,9; lifting` and .turning` machine of the class described, thecombination, with the rock-shaft and a hook-carrier mounted on saidshaft, of a hook having a horn on its curved end, and mechanism foroperating the hook, for the purpose set forth.

4. The combination, with the rock-shaft bearing'rigidly-attached camsand push-arms and aloosely-mounted hook-carrier, and pivotedlifting-bars operated by said cams, of two steam-cylinders, each havingapistonrod, one pivoted to the hook and the other pivoted to one of thepush-arms, a steamchest for each cylinder, provided with an adj ustablevalve-stem, two quadrants upon the rock-shaft with which the Valve-stemsare connected, and lever mechanism for operating the valve-slems,substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FLAVEL SIMONSGN.

Witnesses:

E. QNYE, PERLEY PITKIN.

